Granted Patent
Utility
US 4,649,671 · App. 06/732,198
Method for the precision working of the flanks of gears with a gear-shaped tool coated with hard-material granules and a method for dressing such a tool
Inventors:
Manfred Erhardt, Herbert Loos, Gerhard Reichert
Patented Case
View Patent ↗
Granted: Mar 17, 1987
Filed: May 8, 1985
Inventors
Manfred Erhardt
Herbert Loos
Gerhard Reichert
Assignee (at issue)
Carl Hurth Maschinen- und Zahnradfabrik GmbH & Co.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.